PHY 112 MIDTERM (RIO
SALADO)EXAM QUESTIONS AND
ANSWERS LATEST UPDATE 2025
, Two charged particles both have positive net charges. They are near each other and
released from rest. Which of the following statements best describes the interaction of
the particles? - ANSWER-The particles will repel. As they get further apart, the repelling
force will decrease.
Two identical metal blocks are in contact side-by-side. A positively charged rod moves
near the left block. Which of the following most accurately shows the resulting
distribution of charge throughout the metal blocks? - ANSWER-D
Three charged particles are held in place. Particle A has a net charge of +2 μC and is at
(0, 0) m. Particle B has a net charge of -4 μC and is placed a (0.5, 0) m. Particle C has
a net charge of -4 μC and is at (0, 0.5) m. What is the magnitude of the net force on
particle A? - ANSWER-0.41 N
Which of the following statements best describes conductors? - ANSWER-Conductors
are metal and allow charge to move freely through them.
Which of the following processes will NOT result in a change in net charge on an
object? - ANSWER-polarization
A positively charged plastic balloon filled with air will stick to a neutrally charged
nonmetal ceiling. Which of the following is the most likely explanation for this behavior?
- ANSWER-The balloon caused the ceiling to polarize, which created a net attracting
force between the polarized ceiling and the balloon.
Two positively charged particles experience a static electric force of F. One of the
particles is replaced with a new charged particle that has three times more charge than
the original. The new static electric force will be - ANSWER-3F
Point x is equidistant from two particles with net charges of +q and -q of equal
magnitude. If a negative point charge is at the position marked by the x, the direction of
the net electrical force on the negative point charge is - ANSWER-up
Two neutral metal blocks are in physical contact side-by-side. Block A is on the left, and
block B is on the right. A positively charged rod is near the left side of block A (see
below). With the positive rod still present, the blocks separate. As a result, block B will
have a net charge that is - ANSWER-positive
Which of the following is an example of an insulator? - ANSWER-All of the above are
examples of insulators
SALADO)EXAM QUESTIONS AND
ANSWERS LATEST UPDATE 2025
, Two charged particles both have positive net charges. They are near each other and
released from rest. Which of the following statements best describes the interaction of
the particles? - ANSWER-The particles will repel. As they get further apart, the repelling
force will decrease.
Two identical metal blocks are in contact side-by-side. A positively charged rod moves
near the left block. Which of the following most accurately shows the resulting
distribution of charge throughout the metal blocks? - ANSWER-D
Three charged particles are held in place. Particle A has a net charge of +2 μC and is at
(0, 0) m. Particle B has a net charge of -4 μC and is placed a (0.5, 0) m. Particle C has
a net charge of -4 μC and is at (0, 0.5) m. What is the magnitude of the net force on
particle A? - ANSWER-0.41 N
Which of the following statements best describes conductors? - ANSWER-Conductors
are metal and allow charge to move freely through them.
Which of the following processes will NOT result in a change in net charge on an
object? - ANSWER-polarization
A positively charged plastic balloon filled with air will stick to a neutrally charged
nonmetal ceiling. Which of the following is the most likely explanation for this behavior?
- ANSWER-The balloon caused the ceiling to polarize, which created a net attracting
force between the polarized ceiling and the balloon.
Two positively charged particles experience a static electric force of F. One of the
particles is replaced with a new charged particle that has three times more charge than
the original. The new static electric force will be - ANSWER-3F
Point x is equidistant from two particles with net charges of +q and -q of equal
magnitude. If a negative point charge is at the position marked by the x, the direction of
the net electrical force on the negative point charge is - ANSWER-up
Two neutral metal blocks are in physical contact side-by-side. Block A is on the left, and
block B is on the right. A positively charged rod is near the left side of block A (see
below). With the positive rod still present, the blocks separate. As a result, block B will
have a net charge that is - ANSWER-positive
Which of the following is an example of an insulator? - ANSWER-All of the above are
examples of insulators
